Affiliation:
1. College of Biomedical Engineering, Sichuan University, Chengdu 610065, China
Abstract
The aim of this study is to analyze the resorption rate of bone graft materials after crestal sinus floor elevation, study its influencing factors, and improve the long-term success rate of implants after crestal maxillary sinus floor elevation. Measurement and analysis were conducted at six postoperative timepoints (0 months, 6 months, 12 months, 18 months, 24 months, and 30 months) using cone beam computed tomography (CBCT) data on 31 patients from the Chenghuaxinguanghua Dental Clinic who underwent crestal maxillary sinus floor elevation, involving 38 graft sites. The materials resorption rates of the bone graft height (BH) and bone graft width (BW) were assessed. BH and BW resorption rates followed the same trend (p = 0.07), with BH and BW resorption rates decreasing with time (rBH = −0.32, p < 0.01; rBW = −0.18, p < 0.01), and were maximal in the 0–6 month interval, with BH and BW resorption rates of 3.42%/mth and 3.03%/mth, respectively. The average monthly BH and BW resorption rates in the 6–12 month interval rapidly decreased to 1.75%/mth and 1.29%/mth, respectively. The monthly BH and BW resorption rates in the 12–30 month intervals stabilized at 1.45%/mth (p > 0.05) and 1.22%/mth (p > 0.05), respectively. The higher the initial bone graft height (BH0), the lower the BH resorption rates (rBH = −0.98, p < 0.05), and the BW resorption rate was different for different graft sites (p = 0.01). The resorption rates of bone graft materials implanted through crestal maxillary sinus floor elevation decreased rapidly within the first 12 months post operation and remained stable after 12 months. BH0 was identified as a significant factor influencing the resorption rates of bone graft materials. These results could suggest dentists should pay attention to the trend of resorption rates over time and carefully manage the initial height of bone grafts and inspire the research of new bone grafting materials for crestal maxillary sinus floor elevation.
Reference43 articles.
1. Update on Maxillary Sinus Augmentation;Bhalla;Dent. Clin.,2021
2. Survival Rate of Dental Implant Placed Using Various Maxillary Sinus Floor Elevation Techniques: A Systematic Review and Meta-Analysis;Shah;J. Indian Prosthodont. Soc.,2022
3. Minimal Invasiveness in the Transcrestal Elevation of the Maxillary Sinus Floor: A Systematic Review;Farina;Periodontology 2000,2023
4. Lim, S.T., Kusano, K., Taniyama, T., Sakuma, S., Nakajima, Y., Xavier, S.P., and Baba, S. (2022). Contribution to Bone Formation of the Schneiderian Membrane after Sinus Augmentation: A Histological Study in Rabbits. Materials, 15.
5. Maxillary Sinus Augmentation Using Granular Calcium Sulfate (Surgiplaster Sinus): Radiographic and Histologic Study at 2 Years;Guarnieri;Int. J. Periodontics Restor. Dent.,2006